Minimal OpenGL Utility Library (MOGUL) is a library similar to GLUT, only with fewer features. It lets you write window-system-independent OpenGL programs with even fewer lines of code than GLUT. It currently supports X11 and Win32. Examples are included in the distribution. It is intended to be easy to learn and simple to use.
GLCaml is an Objective Caml interface for OpenGL versions 1.1, 1.2, 1.3, 1.4, 1.5, 2.0, and 2.1, plus extensions. It is intended as a compact drop-in binding. It is a direct, dynamic binding to OpenGL. An OCaml SDL binding is provided as well, along with texture-map scaling functions, texture mip-map generators, and a bitmapped font library. Extensive documentation and more than 20 examples are provided.
Equalizer is middleware for creating and deploying parallel OpenGL-based applications. It enables applications to benefit from multiple graphics cards, processors, and computers to scale rendering performance, visual quality, and display size. An Equalizer-based application runs unmodified on any visualization system, from a simple workstation to large scale graphics clusters, multi-GPU workstations, and Virtual Reality installations.
The Deimos Project is a 3D space combat simulator and modular game library collection. It includes a 3D modeler designed with a programmer's needs in mind. It allows you to construct 3D models by writing Java source code. All you need to design a model is a computer, some graph paper, and a pencil. The modeler's internals function as a simple OpenGL scene graph API, without preventing the use of low-level OpenGL commands. For storing settings and other hierarchically-representable data, the project provides a Hierarchy library that stores data atomically using XML. It also features a timing library, a game object container system, and many other features.
Libg3d is a glib-based library for loading and manipulating 3D objects. It supports a wide range of file formats for 3D objects and textures. Its plugin interface makes it easily expandable. The code has been split off from the g3dviewer project, which now depends on this library.